Suppression of the Codling Moth (Lepidoptera: Tortricidae) Population on Pears in Southern Oregon through Mating Disruption with Sex Pheromone1

Abstract

When broadcast applications of the sex pheromone (E, E)-8,10-dodecadien-1-ol were made over a 2-year period in pear orchards for suppression of Cydia pomonella (L.) in southern Oregon, communication between the sexes, subsequent mating, and reproduction, as indicated by the degree of damage to the fruit, were significantly reduced. When applied three to five times per season to orchards with initially low population levels, the pheromone precluded response of males to pheromone-baited traps for 16 weeks and gave ca. 90% control as compared to the untreated controls. Little or no control was achieved where initial C. pomonella population levels were high.